SOURCES:

• http://www2.chemistry.msu.edu/faculty/reusch/VirtTxtJml/sterisom.htm

• http://chemwiki.ucdavis.edu/Organic_Chemistry/Fundamentals/Structure_of_Organic_Molecules/Cis_and_Trans_Isomers_of_Alkanes

• http://www.chem.ucalgary.ca/courses/350/orgnom/alkenes/alkenes-02.html

• Sir Jeff's Discussion